In my last annual message, to which I respectfully refer, I stated briefly the reasons which induced me to recommend a modification of the present tariff by converting the ad valorem into a specific duty wherever the article imported was of such a character as to permit it, and that such a discrimination should be made in favor of the industrial pursuits of our own country as to encourage home production without excluding foreign competition.

The numerous frauds which continue to be practiced upon the revenue by false invoices and undervaluations constitute an unanswerable reason for adopting specific instead of ad valorem duties in all cases where the nature of the commodity does not forbid it. A striking illustration of these frauds will be exhibited in the report of the Secretary of the Treasury, showing the custom-house valuation of articles imported under a former law, subject to specific duties, when there was no inducement to undervaluation, and the custom-house valuations of the same articles under the present system of ad valorem duties, so greatly reduced as to leave no doubt of the existence of the most flagrant abuses under the existing laws. This practical evasion of the present law, combined with the languishing condition of some of the great interests of the country, caused by over importations and consequent depressed prices, and with the failure in obtaining a foreign market for our increasing surplus of breadstuffs and provisions, has induced me again to recommend a modification of the existing tariff. The report of the Secretary of the Interior, which accompanies this communication, will present a condensed statement of the operations of that important Department of the Government.

It will be seen that the cash sales of the public lands exceed those of the preceding year, and that there is reason to anticipate a still further increase, notwithstanding the large donations which have been made to many of the States and the liberal grants to individuals as a reward for military services. This fact furnishes very gratifying evidence of the growing wealth and prosperity of our country.

Suitable measures have been adopted for commencing the survey of the public lands in California and Oregon. Surveying parties have been organized and some progress has been made in establishing the principal base and meridian lines. But further legislation and additional appropriations will be necessary before the proper subdivisions can be made and the general land system extended over those remote parts of our territory.

On the 3d of March last an act was passed providing for the appointment of three commissioners to settle private land claims in California. Three persons were immediately appointed, all of whom, however, declined accepting the office in consequence of the inadequacy of the compensation. Others were promptly selected, who for the same reason also declined, and it was not until late in the season that the services of suitable persons could be secured. A majority of the commissioners convened in this city on the 10th of September last, when detailed instructions were given to them in regard to their duties. Their first meeting for the transaction of business will be held in San Francisco on the 8th day of the present month.

I have thought it proper to refer to these facts, not only to explain the causes of the delay in filling the commission, but to call your attention to the propriety of increasing the compensation of the commissioners. The office is one of great labor and responsibility, and the compensation should be such as to command men of a high order of talents and the most unquestionable integrity.

The proper disposal of the mineral lands of California is a subject surrounded by great difficulties. In my last annual message I recommended the survey and sale of them in small parcels under such restrictions as would effectually guard against monopoly and speculation; but upon further information, and in deference to the opinions of persons familiar with the subject, I am inclined to change that recommendation and to advise that they be permitted to remain as at present, a common field, open to the enterprise and industry of all our citizens, until further experience shall have developed the best policy to be ultimately adopted in regard to them. It is safer to suffer the inconveniences that now exist for a short period than by premature legislation to fasten on the country a system founded in error, which may place the whole subject beyond the future control of Congress.

The agricultural lands should, however, be surveyed and brought into market with as little delay as possible, that the titles may become settled and the inhabitants stimulated to make permanent improvements and enter on the ordinary pursuits of life. To effect these objects it is desirable that the necessary provision be made by law for the establishment of land offices in California and Oregon and for the efficient prosecution of the surveys at an early day.

Some difficulties have occurred in organizing the Territorial governments of New Mexico and Utah, and when more accurate information shall be obtained of the causes a further communication will be made on that subject.

In my last annual communication to Congress I recommended the establishment of an agricultural bureau, and I take this occasion again to invoke your favorable consideration of the subject.